Multi-cell apparatus and method for single ion addressing

1. An apparatus for single ion addressing, comprising:

a first cell configured to:

set a polarization of a laser; and

shutter the laser; and

a second cell configured to align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation.

2. The apparatus of claim 1 , wherein the apparatus includes a third cell configured to detect the light fluoresced from the ion.

3. The apparatus of claim 1 , wherein the first cell is configured to set a frequency of the laser.

4. The apparatus of claim 1 , wherein the first cell is configured to set an intensity of the laser.

5. The apparatus of claim 1 , wherein the second cell is inside a vacuum.

6. The apparatus of claim 1 , wherein the apparatus includes a fiber bundle configured to split the laser into a plurality of fibers before the laser enters the first cell.

7. The apparatus of claim 6 , wherein the apparatus includes an additional fiber bundle configured to:

bundle the plurality of fibers after the laser exits the first cell; and

re-split the bundled fibers before the laser enters the second cell.

8. A method for single ion addressing, comprising:

shuttering a laser using a first cell; and

aligning the shuttered laser to an ion in an ion trap using a second cell such that the ion fluoresces light and/or performs a quantum operation.

9. The method of claim 8 , wherein the method includes preparing a state of the laser before shuttering the laser.

10. The method of claim 9 , wherein the method includes preparing the state of the laser using an electro-optic modulator.

11. The method of claim 8 , wherein the method includes shuttering the laser using an acousto-optic modulator of the first cell.

12. The method of claim 8 , wherein the method includes aligning the shuttered laser to the ion in the ion trap using a lens of the second cell and a mirror of the second cell.

13. The method of claim 8 , wherein the method includes aligning the shuttered laser to an additional ion in an additional ion trap using the second cell such that the additional ion fluoresces light and/or performs a quantum operation.

14. The method of claim 13 , wherein:

aligning the shuttered laser to the ion in the ion trap includes aligning a first component of the shuttered laser to the ion in the ion trap; and

aligning the shuttered laser to the additional ion in the additional ion trap includes aligning a second component of the shuttered laser to the additional ion in the additional ion trap.

15. The method of claim 13 , wherein the method includes detecting the light fluoresced from only a single one of the ion and the additional ion at a time.

16. The method of claim 8 , wherein:

shuttering the laser includes shuttering a laser beam emitted by a single laser; and

aligning the shuttered laser to the ion in the ion trap includes aligning the shuttered laser beam emitted by the single laser to the ion in the ion trap such that the ion fluoresces light and/or performs a quantum operation when the ion is illuminated by the shuttered laser beam emitted by the single laser.

17. An apparatus for single ion addressing, comprising:

a first cell configured to:

set a frequency and a polarization of a laser; and

shutter the laser; and

a second cell inside a vacuum and configured to:

align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation; and

receive the light fluoresced from the ion.

18. The apparatus of claim 17 , wherein the apparatus includes a third cell configured to:

receive the light fluoresced from the ion from the second cell; and

detect the light fluoresced from the ion.

19. The apparatus of claim 17 , wherein the first cell is outside the vacuum.

20. The apparatus of claim 17 , wherein the second cell is configured to terminate the shuttered laser after the shuttered laser is aligned to the ion in the ion trap.